Method and apparatus for video encoding/decoding using a geometric partitioning mode

Abstract

A method for decoding a video includes partitioning a current block into a first region and a second region. The method also includes determining whether the first region utilizes an intra-prediction mode or an inter-prediction mode. The method additionally includes determining whether the second region utilizes the intra-prediction mode or the inter-prediction mode. The method also includes generating intra prediction block for a region that utilizes the intra-prediction mode among the first region and the second region. The method also includes generating inter prediction block for a region that utilizes the inter-prediction mode among the first region and the second region. The method further includes generating a prediction block of the current block, based on prediction block for the first region and prediction block for the second region.

What is claimed is: 
     
         1 . A video decoding method, comprising:
 partitioning a current block into a first region and a second region;   generating intra prediction block corresponding to the first region, based on at least one of a most probable mode (MPM) list, intra-prediction modes of one or more blocks adjacent to the current block, one or more reference pixels adjacent to the current block, or a third region adjacent to the current block;   generating inter prediction block corresponding to the second region; and   generating a prediction block of the current block, based on the intra prediction block and the inter prediction block.   
     
     
         2 . The video decoding method of  claim 1 , wherein the first region is an upper left region of the current block, and the second region is a lower right region of the current block. 
     
     
         3 . The video decoding method of  claim 1 , wherein the MPM list is generated based on the first region or at least one or more reference blocks adjacent to the current block. 
     
     
         4 . The video decoding method of  claim 1 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating one or more prediction pixels by applying one or more candidate modes in the MPM list to one or more reference pixels of the third region adjacent to the current block;   calculating variable values based on differences between the one or more prediction pixels and one or more reconstructed pixels of the third region; and   deriving, based on the variable values, the intra prediction block corresponding to the first region.   
     
     
         5 . The video decoding method of  claim 4 , wherein the third region is determined based on the current block or the first region. 
     
     
         6 . The video decoding method of  claim 1 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating a list of slopes by using the one or more reference pixels adjacent to the current block; and   deriving the intra prediction block corresponding to the first region based on the list of slopes,   wherein the intra prediction block corresponding to the first region is derived based on a slope magnitude.   
     
     
         7 . The video decoding method of  claim 6 , wherein the one or more reference pixels adjacent to the current block are determined based on the current block or the first region. 
     
     
         8 . The video decoding method of  claim 1 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating a list of intra-prediction modes based on the intra-prediction modes of the one or more blocks adjacent to the current block; and   deriving the intra prediction block corresponding to the first region based on the list of intra-prediction modes.   
     
     
         9 . The video decoding method of  claim 8 , wherein the one or more blocks adjacent to the current block are determined based on the current block or the first region. 
     
     
         10 . The video decoding method of  claim 8 , wherein the intra prediction block corresponding to the first region is derived based on a frequency of occurrence of intra prediction modes in the list of intra-prediction. 
     
     
         11 . A video encoding method, comprising:
 partitioning a current block into a first region and a second region;   generating intra prediction block corresponding to the first region, based on at least one of a most probable mode (MPM) list, intra-prediction modes of one or more blocks adjacent to the current block, one or more reference pixels adjacent to the current block, or a third region adjacent to the current block;   generating inter prediction block corresponding to the second region; and   generating a prediction block of the current block, based on the intra prediction block and the inter prediction block.   
     
     
         12 . The video encoding method of  claim 11 , wherein the first region is an upper left region of the current block, and the second region is a lower right region of the current block. 
     
     
         13 . The video encoding method of  claim 11 , wherein the MPM list is generated based on the first region or at least one or more reference blocks adjacent to the current block. 
     
     
         14 . The video encoding method of  claim 11 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating one or more prediction pixels by applying one or more candidate modes in the MPM list to one or more reference pixels of the third region adjacent to the current block;   calculating variable values based on differences between the one or more prediction pixels and one or more reconstructed pixels of the third region; and   determining, based on the variable values, the intra prediction block corresponding to the first region.   
     
     
         15 . The video encoding method of  claim 14 , wherein the third region is determined based on the current block or the first region. 
     
     
         16 . The video encoding method of  claim 11 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating a list of slopes by using the one or more reference pixels adjacent to the current block; and   determining the intra prediction block corresponding to the first region based on the list of slopes,   wherein the intra prediction block corresponding to the first region is determined based on a slope magnitude.   
     
     
         17 . The video encoding method of  claim 16 , wherein the one or more reference pixels adjacent to the current block are determined based on the current block or the first region. 
     
     
         18 . The video encoding method of  claim 11 , wherein generating the intra prediction block corresponding to the first region comprises:
 generating a list of intra-prediction modes based on the intra-prediction modes of the one or more blocks adjacent to the current block; and   determining the intra prediction block corresponding to the first region based on the list of intra-prediction modes,   wherein the intra prediction block corresponding to the first region is determined based on a frequency of occurrence of intra prediction modes in the list of intra-prediction modes.   
     
     
         19 . The video encoding method of  claim 18 , wherein the one or more blocks adjacent to the current block are determined based on the current block or the first region. 
     
     
         20 . A method for transmitting a bitstream associated with video data, the method comprises:
 generating the bitsream by encoding the video data; and   transmitting the bitstream to a video decoding apparatus,   wherein generating the bitstream comprises:   partitioning a current block into a first region and a second region;   generating intra prediction block corresponding to the first region, based on at least one of a most probable mode (MPM) list, intra-prediction modes of one or more blocks adjacent to the current block, one or more reference pixels adjacent to the current block, or a third region adjacent to the current block;   generating inter prediction block corresponding to the second region; and   generating a prediction block of the current block, based on the intra prediction block and the inter prediction block.